Loading vulnerability…
CVE-2026-64530 is a use-after-free vulnerability in the Linux kernel traffic control subsystem, in net/sched cls_api, caused by improper handling of the TC_ACT_CONSUMED return value in tcf_qevent_handle(). Under certain packet-processing paths, tcf_classify() can return TC_ACT_CONSUMED when the socket buffer is held by the connection-tracking defragmentation engine, including scenarios involving act_ct and out-of-order fragmented traffic. In that state, ownership of the skb has already been transferred and the caller must not access it further. The vulnerable logic in tcf_qevent_handle() failed to recognize this condition, fell through as though classification had succeeded, and returned the skb to the caller. As a result, downstream code such as RED qdisc processing in red_enqueue() could continue to enqueue, drop, or account for an skb it no longer owned, leading to a kernel use-after-free.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
24 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Linux kernel use-after-free vulnerability in the network scheduler caused by a missing handler for TC_ACT_CONSUMED in tcf_qevent_handle.
A Linux kernel use-after-free vulnerability in net sched caused by a missing handler for TC_ACT_CONSUMED in tcf_qevent_handle.
Linux kernel use-after-free vulnerability in net/sched caused by a missing handler for TC_ACT_CONSUMED in tcf_qevent_handle.
Linux kernel use-after-free vulnerability in net scheduler code caused by a missing handler for TC_ACT_CONSUMED in tcf_qevent_handle.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.